force-delete-instance

#!/bin/bash
# force delete instances 

# VARs
INSTANCE_NAME=""
INSTANCE_ID=""
INSTANCE_IPv4=""

INSTANCE_NAME_TO_DEL=""
INSTANCE_ID_TO_DEL=""
INSTANCE_NAME_IN_ERROR=""

PORT_ID=""
EMPTY_PORTS="false"
ANSWER=""
ANSWER_DEL=""



# GET name
echo 'enter instance name'
read INSTANCE_NAME

# CHECK if exists
nova list | grep $INSTANCE_NAME 
# > /dev/null 2>&1

# GET instance id
#if [[ $? -eq 0 ]]; then

#	echo ""
#	echo "instance $INSTANCE_NAME exist :-)"
	
	INSTANCE_ID=`nova list --all-tenants=1 | grep $INSTANCE_NAME | awk '{print $2}'`
#fi

# GET ipv4
#INSTANCE_IPv4=`nova list | grep $INSTANCE_NAME | awk '{print $12}' | cut -d= -f 2`
echo $INSTANCE_IPv4
INSTANCE_IPv4=`nova show $INSTANCE_ID | grep network | awk '{print $5}'`

# GET port id
PORT_ID=`neutron port-list | grep $INSTANCE_IPv4 | awk '{print $2}'`

# CHECK if port exist's
if [[ $PORT_ID == "" || $PORT_ID == " " ]];then

	PORT_ID="no ports attached!"
	EMPTY_PORTS="true"
fi
	
# SHOW var's
echo ""
echo "instance_name = $INSTANCE_NAME"
echo "instance_id   = $INSTANCE_ID"
echo "ipv4          = $INSTANCE_IPv4"
echo "port_id       = $PORT_ID"



if [[ $EMPTY_PORTS == "false" ]]; then

	# REMOVE port
	echo ""
	echo "remove port $PORT_ID from instance $INSTANCE_NAME ? ( yes/no )"
	read ANSWER

	if [[ $ANSWER == "yes"  ]]; then

		neutron port-delete $PORT_ID
	else
		echo ""
		echo "exit"
		exit 0
	fi
fi

# DELETE INSTANCE
echo ""
echo "remove instance $INSTANCE_NAME, id=$INSTANCE_ID ? ( yes/no )"
read ANSWER_DEL

if [[ $ANSWER_DEL == "yes"  ]]; then

	# nova delete $INSTANCE_ID
	echo "nova delete $INSTANCE_ID"
else
	echo ""
	echo "exit"
	exit 0
fi

# CHECK IF instance still exit's
nova list | grep $INSTANCE_NAME

if [ $? -eq 1 ]; then
	echo "instance was successfully deleted :-)"
fi

if [ $? -eq 0 ]; then
	
	echo " instance still exits, trying to delete again ..." 

	# If an instance gets stuck in an intermediate state (e.g., "deleting")
	echo "wait 10 seconds"
	sleep 10

	nova list | grep deleting
	if [ $? -eq 0 ]; then
		
		INSTANCE_ID_TO_DEL=`nova list --all-tenants=1 | grep $INSTANCE_NAME | awk '{print $2}'`

		echo "one instance on deleting state !"
		nova reset-state --active $INSTANCE_ID_TO_DEL
		nova delete $INSTANCE_ID_TO_DEL
		
	fi
	
	# Use the --active to force the instance back into an active state instead of an error state
	echo "try to force delete ..."
	nova reset-state --active $INSTANCE_ID
	nova force-delete $INSTANCE_ID

	# try to stop instance and then delete
	nova list | grep deleting
	if [ $? -eq 0 ]; then
		
		INSTANCE_ID_TO_DEL=`nova list --all-tenants=1 | grep $INSTANCE_NAME | awk '{print $2}'`
		nova reset-state --active $INSTANCE_ID_TO_DEL
		nova stop $INSTANCE_ID_TO_DEL
		nova delete $INSTANCE_ID_TO_DEL

fi

# CHECK instances in error state
nova list --all-tenants=1 | grep

if [ $? -eq 0 ]; then

	echo "check instances in error state"
	INSTANCE_NAME_IN_ERROR=`nova list --all-tenants=1 | grep deleting | awk '{print $4}'`
	
	echo "$INSTANCE_NAME_IN_ERROR is in error state"

fi

# THE END
echo ""
exit 0